-LRB- CNN -RRB- Three U.S. Navy sailors were assaulted and had bags placed over their heads during a stop in Istanbul , Turkey , according to U.S. military officials .

The incident , captured on video , happened Wednesday when sailors from the USS Ross were attacked by members of the Turkish Youth Union , according to local Turkish press accounts .

`` US Navy officials are working with the embassy and NCIS to investigate the incident . The three sailors were unharmed and are safely back aboard . They did not require medical attention , '' Capt. Greg Hicks , a spokesman with U.S. European Command told CNN .

The assailants appeared to be neo-nationalists shouting slogans like `` Yankee Go Home , '' according to local press accounts . They did not appear to be tied to ISIS , which is based in neighboring Syria .

`` The incident does not reflect the hospitality nor the welcome reception our ships receive in port in Turkey , '' Hicks went on to say , and added that leave for sailors from the ship was canceled for the remainder of the day .

The U.S. Embassy in Ankara condemned the attack through its official Twitter feed .

` We condemn today 's attack in Istanbul , and have no doubt the vast majority of Turks would join us in rejecting an action that so disrespects Turkey 's reputation for hospitality . ''

CNN 's Samira Said and Hande Atay contributed to this report .

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Members of the Turkish Youth Union attack sailors from USS Ross , reports say

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Bags placed over sailors ' heads during a stop in Istanbul , U.S. military officials say

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`` The three sailors were unharmed and are safely back aboard , '' spokesman says